2900155 has 4 divisors (see below), whose sum is σ = 3480192. Its totient is φ = 2320120.

The previous prime is 2900147. The next prime is 2900159. The reversal of 2900155 is 5510092.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2900155 - 2³ = 2900147 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2900159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290011 + ... + 290020.

It is an arithmetic number, because the mean of its divisors is an integer number (870048).

2^2900155 is an apocalyptic number.

2900155 is a deficient number, since it is larger than the sum of its proper divisors (580037).

2900155 is an equidigital number, since it uses as much as digits as its factorization.

2900155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580036.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 2900155 is about 1702.9841455516. The cubic root of 2900155 is about 142.6068553206.

The spelling of 2900155 in words is "two million, nine hundred thousand, one hundred fifty-five".